Thank you MH. I just discovered your website and forum. Sounds like you sell a bunch of old medical books. Cool. You mention above that desert parsley has to be prepared in a tincture in a special way. I've been making my own tinctures. Wormwood and green black walnut hulls and white oak bark so far. Fill bottle 1/2 to 2/3rds with dried herb, then add 80 proof vodka, shake bottle everyday for 6 weeks. Then strain. Do you teach your way to make tinctures?